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An-Najah National University Faculty Of Engineering Department Of Civil Engineering

An-Najah National University Faculty Of Engineering Department Of Civil Engineering. HYDROLOGICAL Study for DESIGN AL MALEH DAM. Prepared By : MUHAMMAD SAADEH OSAMA ABU MUTAW’ AHMAD ABU KHADRAH. UNDER THE SUPERVISION OF DR. NUMAN MIZYD. Introduction.

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An-Najah National University Faculty Of Engineering Department Of Civil Engineering

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  1. An-Najah National University Faculty Of Engineering Department Of Civil Engineering • HYDROLOGICAL Study for DESIGN AL MALEH DAM • Prepared By: • MUHAMMAD SAADEH • OSAMA ABU MUTAW’ • AHMAD ABU KHADRAH UNDER THE SUPERVISION OF DR. NUMAN MIZYD

  2. Introduction {أَنزَلَ مِنَ السَّمَاء مَاء فَسَالَتْ أَوْدِيَةٌ بِقَدَرِهَا فَاحْتَمَلَ السَّيْلُ زَبَدًا رَّابِيًا } (17) سورة الرعد • Important of water.

  3. Objectives • Study the characteristics of the study area. • Conduct a yield analysis for the watershed. • Establish a hydrological model using computer software to estimate the design flood flow. • Design the dam embankment.

  4. Methodology

  5. Data Collections • previous studies • Ministry of Agriculture • Tubas Municipality • Meteorological Department

  6. Study Area

  7. WATERSHED DELINEATION • DEM data. • GIS Software • Arc Hydro toolbar. • HEC-Geo HMS toolbar.

  8. WATERSHED DELINEATION

  9. WatershedCharacteristics

  10. Yield Analysis

  11. STATISTICAL ANALYSIS

  12. Hydrologicalanalysis

  13. Hydrologicalanalysis Model Parameter • Sub basin • Junctions • Reach • Outlet (Sink)

  14. Hydrologicalanalysis

  15. IDF Curve (100- Year)

  16. Design Flood Flow

  17. Resulted Hydrograph at Outlet

  18. Flood Routing for Reach 1

  19. Embankment Design

  20. Dam Dimensions • Dam storage volume is 600000 CM. • Max. length for the dam is 170m. • Max. width of the dam is 103m. • Max. height of the dam is 15m. • Crest width is 6m. • Side slope for upstream is 3.5:1 • Side slope for Downstream is 3:1

  21. Dam Dimensions

  22. Dam Layers

  23. Spillway Design (spillway layout)

  24. Spillway Profile

  25. Spillway Geometry • Q = 1.7 B H1.5 • C (discharge coefficient) is 1.7 • B (width of spillway) is 10m • H (design head) is 2.4m • The length of spillway is 250m • Elevation Difference is 30m

  26. Stilling basin Design • Stilling basin length is 55m • Water depth before stilling is 0.5m • Water depth after hydraulic jump is 13m

  27. Outlet Design • Pipe diameter is 12inch. • Pipe slope is 2%. • Pipe capacity is 0.58 m3 / s.

  28. Outlet Design

  29. Recommendations • Geotechnical study • Geophysical survey • Environmental study • Cost analysis study • Water quality studies

  30. For Your Attention

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